can install
Regular verb: install - installed- installed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can install
you can install
she can install
we can install
you can install
they can install 	I can be installing
you can be installing
she can be installing
we can be installing
you can be installing
they can be installing	I can have installed
you can have installed
she can have installed
we can have installed
you can have installed
they can have installed	I can have been installing
you can have been installing
she can have been installing
we can have been installing
you can have been installing
they can have been installing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot install
you cannot install
she cannot install
we cannot install
you cannot install
they cannot install 	I cannot be installing
you cannot be installing
she cannot be installing
we cannot be installing
you cannot be installing
they cannot be installing	I cannot have installed
you cannot have installed
she cannot have installed
we cannot have installed
you cannot have installed
they cannot have installed	I cannot have been installing
you cannot have been installing
she cannot have been installing
we cannot have been installing
you cannot have been installing
they cannot have been installing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I install?
can you install?
can she install?
can we install?
can you install?
can they install? 	can I be installing?
can you be installing?
can she be installing?
can we be installing?
can you be installing?
can they be installing? 	can I have installed?
can you have installed?
can she have installed?
can we have installed?
can you have installed?
can they have installed? 	can I have been installing?
can you have been installing?
can she have been installing?
can we have been installing?
can you have been installing?
can they have been installing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not install?
can you not install?
can she not install?
can we not install?
can you not install?
can they not install? 	can I not be installing?
can you not be installing?
can she not be installing?
can we not be installing?
can you not be installing?
can they not be installing? 	can I not have installed?
can you not have installed?
can she not have installed?
can we not have installed?
can you not have installed?
can they not have installed? 	can I not have been installing?
can you not have been installing?
can she not have been installing?
can we not have been installing?
can you not have been installing?
can they not have been installing?